EPJ Web of Conferences (Jan 2019)

Improving the Scheduling Efficiency of a Global Multi-Core HTCondor Pool in CMS

  • Bockelman Brian Paul,
  • Foyo Diego Davila,
  • Hurtado Anampa Kenyi,
  • Ivanov Todor Trendafilov,
  • Khan Farrukh Aftab,
  • Kotobi Amjad,
  • Larson Krista,
  • Letts James,
  • Mascheroni Marco,
  • Mason David,
  • Pérez-Calero Yzquierdo Antonio

DOI
https://doi.org/10.1051/epjconf/201921403056
Journal volume & issue
Vol. 214
p. 03056

Abstract

Read online

Scheduling multi-core workflows in a global HTCondor pool is a multi-dimensional problem whose solution depends on the requirements of the job payloads, the characteristics of available resources, and the boundary conditions such as fair share and prioritization imposed on the job matching to resources. Within the context of a dedicated task force, CMS has increased significantly the scheduling efficiency of workflows in reusable multi-core pilots by various improvements to the limitations of the GlideinWMS pilots, accuracy of resource requests, efficiency and speed of the HTCondor infrastructure, and job matching algorithms.